Description:_x000D_ This is a digital brake fluid tester suitable for determining brake fluid quality. Quality is tested and indicated on five LEDs in terms of percent of water in the brake fluid. It is commonly for professional use in automotive repair or servicing shops._x000D_ _x000D_ Features:_x000D_ _x000D_ Ideal tool for check brake fluid quality. _x000D_ 5LEDs to indicate percentage of water in the brake fluid. _x000D_ Automatically power off. _x000D_ Press the button to turn on, the green LED will light up. _x000D_ Insert the tester into reservoir for one second then the test result will indicated by LEDs. _x000D_ _x000D_ Specifications:_x000D_ Material: Plastic + Metal_x000D_ Color: Blue_x000D_ Type: LED(5LED)_x000D_ Voltage: DC 1.5V_x000D_ Battery: AAA ( NOT included)_x000D_ Package Weight: approx. 60g_x000D_ _x000D_ Indicator Function:_x000D_ Green: Battery OK, i.e.: No water contained in the brake fluid_x000D_ Yellow: Less than 1% of water contain in brake fluid_x000D_ Yellow/Yellow: 2% of water contain in brake fluid_x000D_ Yellow/Yellow/Red: 3% of water contain in brake fluid. the brake fluid should be changed_x000D_ Yellow/Yellow/Red/Red: at least 4% of water contain in brake fluid. the brake fluid must be changed urgently!_x000D_ _x000D_ Package Included:_x000D_ 1x Brake Fluid Tester 1Ideal tool for check brake fluid quality 25LEDs to indicate percentage of water in the brake fluid 3Automatically power off 4Press the button to turn on, the green LED will light up 5Insert the tester into reservoir for one second then the test result will indicated by LEDs